Google’s new mobile device, the Nexus One, launched a week ago to warm reviews; sites like Engadget and Gizmodo praised the device’s speed and hardware features, comparing it to the Droid in terms of capability. According to market reports from Flurry (via VentureBeat), however, the device has only sold roughly 20,000 units during its first week on the market.

This isn’t necessarily a signal that mobile customers are rejecting Google’s new phone, but it may well be indicative of the current flaws in the device’s marketing. For starters, the Nexus One launched immediately after the winter holiday season, likely missing out on a number of customers who bought or received a different phone for Christmas. It’s also not as attractive to undecided shoppers, as VentureBeat points out: While a consumer can walk into a Verizon or Apple store and pick up a Droid or iPhone, getting a hands-on demo of either device, a Nexus One can only be purchased online, for now.

To top it off, Nexus One’s only subsidized carrier at launch was T-Mobile, a network which boasts fewer customers than AT&T and Verizon, thus necessitating a switch from any Nexus One buyers — unless they wished to pay for the unsubsidized device directly from Google, at a hefty cost of $529.